Pollution Of The Air

A recent writer in Nature calis attention to the pollution of the air by the burning of coal, and calculated that in theyear 1900 all animal life wouldcease on the globe, from the amount of carbonic dioxide thus produced. But another correspondent points out that most of this gas is well washed out of the air by rain. There were, howevcr, some products of combustión, or rather of incomplete combustión, as hydrogen and the hydrocarbons, which are not removed by the rain. Of these unburned gases it is cstimated that 100,000,000 tons have escaped into the air during the last 30 years. What will be the result of this accumulation? According to Professor Tvndall's researches, hydrogen, marsh grass and ethylene have the property in a very high degree of absorbing and' radiating heat, and so much so that a very small proporüon, of only say one-thousandth part, had very great effect. From this we may conolude that the in creasing pqjlution of the atmosphere will have a marked influence on the clinifltn nf tVin wnrlrl 'Fhp mmint niiiiïii; regions will be colder, the Arctic regions will be colder, the tropics will be warmer, and t.hroughout the world the nights will be colder and the days warmer. In the températe zone winter will be colder, and general differenees will be greater, winds, storms, rainfalls greater.